The loan contract is given by the bank.
Normal loan process: Both parties sign a sales contract, register and file online (online signature), and then in the case of a loan, both the owner and the customer need to go to the cooperative bank to handle the loan procedures. The customer needs to show their ID card, account book, academic certificate, income Proofs, etc., the owner needs to bring ID card, proof of sale, etc. The documents you bring are all similar. Local intermediaries should understand these things. If you still don’t understand anything, you can consult your local bank.
The bank will only issue a loan contract and then mortgage the property.